首页 | 本学科首页   官方微博 | 高级检索  
     


Performance assessment of OpenFOAM and FLOW-3D in the numerical modeling of a low Reynolds number hydraulic jump
Affiliation:1. FH Aachen, University of Applied Sciences, Bayernallee 9, Aachen 52066, Germany;2. Research Group of Hydraulics in Environmental and Civil Engineering (HECE), University of Liege (ULg), Chemin des Chevreuils 1, Bat B52/3 +1, Lige B-4000, Belgium
Abstract:A comparative performance analysis of the CFD platforms OpenFOAM and FLOW-3D is presented, focusing on a 3D swirling turbulent flow: a steady hydraulic jump at low Reynolds number. Turbulence is treated using RANS approach RNG k-ε. A Volume Of Fluid (VOF) method is used to track the air–water interface, consequently aeration is modeled using an Eulerian–Eulerian approach. Structured meshes of cubic elements are used to discretize the channel geometry. The numerical model accuracy is assessed comparing representative hydraulic jump variables (sequent depth ratio, roller length, mean velocity profiles, velocity decay or free surface profile) to experimental data. The model results are also compared to previous studies to broaden the result validation. Both codes reproduced the phenomenon under study concurring with experimental data, although special care must be taken when swirling flows occur. Both models can be used to reproduce the hydraulic performance of energy dissipation structures at low Reynolds numbers.
Keywords:CFD  RANS  OpenFOAM  FLOW-3D  Hydraulic jump  Air–water flow  Low Reynolds number
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号